Machine Harness Connector and Component Location
A
A
B
B
C
C
D
D
E
E
1
1
2
2
3
3
4
4
5
5
6
6
7
7 9
9
10
10
12
12
13
13
14
14
15
15
16
16
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
8
8
11
11
17
17
18
18
31
31
32
32
33
33
34
34
E79930
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Actuator - Water Valve F-5 6 Solenoid - Air Conditioner Clutch A-9 2
Air Dryer A-6 5 Solenoid - ASBS A-15 1
Alarm - Action E-9 A Solenoid - Axle Suspension B-12 D
Alarm - Backup C-15 32 Solenoid - FWD Horn C-9 24
Alternator A-8 2 Solenoid - Impl Valve Detent A-13 15
Batteries A-12 3 Solenoid - Start Aid A-5 25
Breaker - Alternator E-13 B Solenoid - Torque Converter C-13 10
Breaker - Blower Motor E-13 B Speedometer C-4 A
Breaker - Dome, Stop, Turn Lamp E-13 B Switch - Air C-9 D
Breaker - Head, Panel, Tail & Park Lamp E-13 B Switch - Air Pressure C-12 26
Breaker - Key E-13 B Switch - A/C F-1 2
Electronic Monitoring System (EMS) F-10 A Switch - Backup Alarm F-12 C
Control Board Assembly F-6 6 Switch - Converter B-11 10
Flasher F-9 E Switch - Coolant B-9 30
Fuse Block F-12 B Switch - Coolant Flow B-14 22
Gauge - Air Pressure C-4 A Switch - Disconnect A-12 2
Gauge - Converter Temp B-5 A Switch - Dome Lamp F-10 E
Gauge - Coolant Temp B-4 A Switch - Ejector Detent A-9 29
Gauge - Fuel C-4 A Switch - Ejector Detent Press A-13 15
Ground E-15 32 Switch - El Neu Start F-11 A
Ground - Cab C-2 D Switch - EMS Test D-3 A
Ground - Chassis C-2 D Switch - Engine Oil A-9 29
Ground - Compartment D-13 B Switch - Engine Oil Press A-9 29
Ground - Scraper Chassis D-15 32 Switch - Fan Speed F-2 A
Lamp - EMS Action B-5 A Switch - Flood Lamp F-2 A
Meter - Tach/HR C-5 A Switch - Forward Horn F-9 E
Motor - Blower F-8 6 Switch - Front Wiper F-5 A
Motor - Front Washer Pump A-2 6 Switch - Front/Rear Washer D-5 A
Motor - Front Wiper F-8 7 Switch - Fuel B-9 22
Motor - Fuel Pump B-15 1 Switch - Fuel Pump D-2 A
Motor - Rear Washer Pump A-3 34 Switch - Head Lamp Dimmer C-9 E
Motor - Rear Wiper F-14 9 Switch - Headlamp F-3 A
Motor - Starter A-11 10 Switch - Key E-1 A
Receptacle - Aux Start A-10 2 Switch - Neutral F-11 A
Relay - Fuel Pump D-11 12 Switch - Neutral Start F-11 A
Relay - Head Lamp E-14 D Switch - Panel Dimmer E-6 A
Relay - Main E-12 12 Switch - Parking Brake C-9 27
Relay - Start D-12 12 Switch - Rear Wiper D-5 A
Relay - Suspension Axle D-13 B Switch - Refrigerant C-9 2
Resistor - Blower Motor E-8 6 Switch - Start Aid D-3 A
Resistor - Diagnostic B-11 10 Switch - Start Aid Temp B-9 30
Resistor - Panel Dimmer F-5 A Switch - Steering B-12 23
Sender - Converter B-11 10 Switch - Stop Lamp C-10 D
Sender - Coolant B-9 13 Switch - Thermostat E-8 6
Sender - Fuel Level D-15 14 Switch - Torqe Converter F-12 E
Sender - Tachometer B-11 15 Switch - Turn Signal F-8 E
Sender - Trans Output Speed A-11 16
C = Located in operator's right hand console.
A = Located in Tractor dash. D = Located under Tractor cab.
B = Located in cab on relay panel. E = Located in Tractor cab.
Machine locations are repeated for components located close together.
Connector Location¹
Connector Number
Schematic
Location
Machine
Location
CONN 1 E-14 32
CONN 2 C-14 23
CONN 3 D-14 B
CONN 4 E-14 B
CONN 5 F-14 B
CONN 6 C-13 23
CONN 7 C-13 23
CONN 8 E-13 B
CONN 9 E-13 B
CONN 10 Diagnostic F-12 B
CONN 11 B-12 23
CONN 12 B-12 23
CONN 13 C-12 10
CONN 14 C-12 11
CONN 15 C-11 11
CONN 16 C-11 11
CONN 17 E-11 B
CONN 18 F-11 B
CONN 19 F-11 B
CONN 20 F-11 B
CONN 21 C-10 11
CONN 22 E-9 E
CONN 23 F-8 7
CONN 24 E-8 6
CONN 25 E-7 A
CONN 26 A-6 18
CONN 27 A-6 18
CONN 28 C-6 A
CONN 29 B-5 A
CONN 30 C-3 D
¹The connectors shown in this chart are harness to harness and
special use connectors. Connectors which join a harness to a
component are generally located at on near the component. See the
component location chart.
Related Electrical Service Manuals
Title Form Number
Alternator: 100-5047
Consist: 100-5045 SENR4130
Consist: 100-5046 SENR2082
Electronic Monitoring System SENR2945
Starter: 6V-5537 SENR3581
Resistor, Sender, and Solenoid Specifications
Part No. Component Resistance (Ohms)¹
3E-1906 Solenoid - Air Conditioner Clutch 17.6 ± 0.6
3E-7259 Sender - ConverterTemperature 6
3T-3123 Resistor - Panel Dimmer 25.0 ± 0.3
6N-5926 Sender - Coolant Temperature 524-586 @ 115.6 C (240.1 F)
5806-7264 @ 54.4 C (129.9 F)
6T-2217 Resistor - Starter/Diagnostic 150 ± 7.5
7N-9719 Solenoid - Torque Converter 68
7T-9074 Solenoid - Forward Horn 74.0 ± 7.4
8C-9634 Solenoid - Ejector Detent 34
8T-8692 Solenoid - Axle Suspension 34.2
9G-1950 Resistor - Blower Motor Speed Overall 2.0 ± 0.1; Tap 1.0 ± .05
9G-4365 Solenoid - Start Aid 6
9T-6590 Solenoid - Implement Valve Detent 108 ± 5.5
9X-9482 Solenoid - ASBS 68
¹ At room temperature.
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
7N-9560 Converter Temperature 129.4 ± 2.8° C 118.3° C MIN Normally
(265.0 ± 5.0° F) (245.0° F MIN) Closed
7N-9785 Coolant Temperature 107.2 ± 2.8° C 93.0° C MIN Normally
(225.0 ± 5.0° F) (200.0° F MIN) Closed
7X-1598 Ejector Kickout Pressure 15200 ± 280 kPa 13800 kPa MIN Normally Closed pin 1-3
Hyd Pilot Filter Pressure (2200 ± 40 psi) (2000 psi MIN) Normally Open pin 1-2
8N-1683 Start Aid Temperature 37.8 ± 2.8° C 26.7° C MIN Normally
(100.0 ± 5.0° F) (80.0° F MIN) Closed
9X-3040 Coolant Flow 362.0 ± 29.0 mN, 45.6 mm ID point 303 mN MIN Normally
(1.3 ± 0.1 oz, 1.8 in ID point) (1.1 oz MIN) Open
9X-3210 Air Pressure 517.0 ± 35.0 kPa 448.0 ± 35.0 kPa Normally
(75.0 ± 5.0 psi) (65.0 ± 5.0 psi) Open
107-0613 Engine Oil Pressure 62.0 ± 21.0 kPa 38.0 ± 21.0 kPa Normally
Ejector Detent Pressure (9.0 ± 3.0 psi) (5.5 ± 3.0 psi) Open
107-0616 Fuel Pressure 93.0 ± 21.0 kPa 69.0 ± 21.0 kPa Normally
(13.5 ± 3.0 psi) (10.0 ± 3.0 psi) Closed
114-5334 Refrigerant Pressure (AC) 275 to 1750 kpa¹ -- Normally ²
(40 to 255 psi) -- Open
125-9352 Stop Lamp Pressure 83.0 kPa MAX 48.0 ± 20.0 kPa MIN Normally
(12.0 psi MAX) (7.0 ± 3.0 psi MIN) Open
134-6547 Steering Flow 4.0 g MAX 1.5 g MIN Normally
(0.14 oz MAX) (0.05 oz MIN) Open
160-2445 Air Pressure 517.0 ± 35.0 kPa 448.0 ± 35.0 kPa Normally
(75.0 ± 5.0 psi) (65.0 ± 5.0 psi) Open
¹ A hysteresis band exists: with increasing pressure the closed condition can be maintained up to 2800 kpa (405 psi), with decreasing pressure the closed
condition can be maintained down to 170 kpa (25 psi).
² Contact position at the contacts of the harness connector.
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Distribution Circuits Monitoring Circuits Continued
101 RD Bat (+) 445 GN Converter/Retarder Oil Temp Gauge
102 RD Hd Lmp 447 PK Fuel Level Gauge
103 RD Aux Ckt 449 BU Spdom Sender (Signal No. 1)
104 YL Aux Ckt 450 YL Tach Sender (+)
105 RD Key Sw 488 WH Air SW To Air SW Jumper
109 RD Alt Output (+) Term. B443 BR Bk Oil Press/Coolant Flow
112 PU Main Power Rly Output B445 GN Elec Speedo (-) Signal
114 GN Warning Horn (Forward) Accessory Circuits
116 BR Aux Ckt 500 BR Wiper - Front (Park)
117 YL Aux Ckt 501 GN Wiper - Front (Low)
118 GY Aux Ckt 502 OR Wiper - Front (HI)
119 PK Aux Ckt 503 BR Wiper - Rear (Park)
120 YL Aux Ckt 504 YL Wiper - Rear (Low)
121 RD Back Alarm To Lamp 505 BU Wiper - Rear (HI)
122 BU Aux Ckt 506 PU Washer - Front
123 WH Aux Ckt 507 WH Washer - Rear
124 GN A/C 508 PU Radio Speaker - Left
125 OR Aux Ckt 509 WH Radio Speaker - Left (Commom)
141 PK Aux Ckt 511 BR Radio Speaker - Right
Ground Circuits 512 GN Radio Speaker - Right (Common)
200 BK Main Chassis 513 OR A/C Compressor/Refrigerant Pressure SW
201 BK Operator Monitor Return 515 GY Blower Motor (HI)
203 BK Chassis Diagnostic 516 GN Blower Motor (Medium)
207 BK Starter Diagnostic 517 BU Blower Motor (Low)
A292 BK Reversing fan option code 1 521 YL A/C SW To Refrigerant SW
Basic Machine Circuits 522 WH A/C Clutch To Thermostat SW
301 BU Starter No. 1 Sol 537 GN Turn Signal SW To Flasher
302 OR Starter No. 1 Resistor To Diagnostic 584 YL Wiper SW Jumper
304 WH Starter Relay No. 1 Output A514 YL SW To Relay Coil
306 GN Starter Relay Coil To Neut Start SW Or Key SW A519 GN Axle Suspension Sol Valve
307 OR Key SW To Neutral Start SW A520 BU Relay To Axle Suspension Rocker SW
308 YL Main Power Relay Coil A521 WH SW To Sol Valve 2nd Imp Pump
310 PU Start Aid SW To Start Aid Sol A522 GN Press SW To Ejector Detent Coil
311 WH Start Aid Sol To Temp SW A523 PU Temp Potentiometer Pos 1
316 PK Cane To Elevator Neutral Start SW Jumper A524 BR Temp Potentiometer Pos 2
321 BR Backup Alarm A525 GN Temp Potentiometer Pos 3
322 GY Warning Horn (Forward) A526 PK Electronic Water Valve Actuator
323 WH Fuel Pump Power A527 BU Electronic Water Valve Actuator
324 BU Differential Lock Sol A528 YL Electronic Water Valve Actuator
326 PU Key SW "C" Term. A529 WH Electronic Water Valve Actuator
Monitoring Circuits A530 OR Electronic Water Valve Actuator
403 GN Alternator (R) Term. Lighting Circuits
405 GY Opr Mon Oil Press. (Low Setting) 600 BR Dash Lamp Basic
406 PU Opr Mon Coolant Temp 601 GY Dash Lamp HI
407 PK Opr Mon Converter/Retarder Oil Temp 602 WH Dome Lamp
408 WH Opr Mon System Air Press. 604 OR Stop Lamp
409 OR Opr Mon Neut 605 YL Turn Lamp - Left
410 WH Opr Mon Action Alarm 606 GY Turn Lamp - Right
411 PK Opr Mon Master 608 GN Flood Lamp - Rear
412 BU Opr Mon Cool Flow 610 OR Head Lamp Basic
413 BR Opr Mon Fuel Press. 611 PU Head Lamp Hi
415 GN Opr Mon Test SW 614 PU Park/Tail/Dash/Lamp
417 GY Primary Ster SW 619 GN Head Lamp Lo
419 YL Opr Mon Parking Brake Control Circuits
441 OR Eng Coolant Temp Gauge 763 BU XMSN Up Sol
444 BU Converter/Retarder Oil Temp Gauge
T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
Normally open switch that is closed due to an applied condition, and will open again with a
specific decrease in that condition.
Normally closed switch that will open with an increase of a specific condition.
Normally closed switch that is open due to an applied condition, and will close again
with a specific decrease in that condition.
The circle indicates that the component has screw terminals and a wire can be disconnected
from it.
No circle indicates that the wire cannot be disconnected from the component.
This indicates that the component has a wire connected to it that is connected to ground.
This indicates that the component does not have a wire connected to ground. It is grounded
by being fastened to the machine.
Electrical Schematic Symbols And Definitions
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
A AA
2
A AA
1
2
325-PK-14
C
A
325-PK-14
200-BK-14
T
FUSE - A component in an electrical circuit that will open the circuit if too much current flows
through it.
REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the
contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.
SENDER - A component that is used with a temperature or pressure gauge. The sender
measures the temperature or pressure. Its resistance changes to give an indication to the
gauge of the temperature or pressure.
RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity.
It has a coil that makes an electromagnet when current flows through it. The electromagnet
can open or close the switch part of the relay.
CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too
much current flows through it. This does not destroy the circuit breaker and it can be reset to
become part of the circuit again.
SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil
that makes an electromagnet when current flows through it. The electromagnet can open or
close a valve or move a piece of metal that can do work.
Harness And Wire Electrical Schematic Symbols
Socket
Pin
Pin or Socket
Number
Wire, Cable, or Harness
Assembly Identification
Single Wire
Connector
Circuit Number
Identification
Wire
Gauge
Wire
Color
Plug
Receptacle
9X-1123
Component
Part Number
Electrical Schematic Symbols And Definitions
1
1
1
2
2
Typical representation of a
Sure-Seal connector. The
receptacle contain
both pins and sockets.
Typical representation of a
Deutsch connector. The
plug contains all sockets
and the receptacle contains
all pins.
MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is
activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)
that make electromagnet when current flows through them. It also has an internal switch that places
the latch coil circuit open at the time the coil latches.
RENR1497
April 1999
611 Wheel Tractor-Scraper
Electrical System
6SZ1-UP
7WZ1-UP
©
1999 Caterpillar
All Rights Reserved
Printed in U.S.A.
141-YL
WH
BK
GY
YL
RELAY COIL
GROUND
SOLENOID 2
SOLENOID 1
BK
614-PU
ATCH
ATCH
ATCH
ATCHATCH
106-8704
ARC SUPPRESSOR
A/C COMPRESSOR
MM
2
1
1
2
B
ATCH
ATCH
ATCH
L31
123-WH
D
D
D
D
L34
310-PU
125-OR
L36
L36
C
C
619-GN619-GN
614-PU
605-YL
606-GY
200-BK-14
C
C
L36
L36
L36
C
2 GA
LL
LL
GROUND
CAB
GROUND
CHASSIS
WH-18
T
601-GY601-GY
310-PU
3
517-BU-14
1
2
311-WH
A
200-BK
A519-GN
BK-18
WH-18
BK-18
CC
B
B
B
B
A
A
A
L25
L25
L16
L17
L17
L17
L27
L27
L26
L27
L27
L27
L27
A
L27
L16
L27
L27
22
L25
L25
L16
L13
L8
L8
L8
L4
L4
L4
L4
L4
201-BK
L24
L13
L13
L13
L16
L16
L16
L12
L12
L14
L14
L14
L14
L14
L15
L15
L15
ALARM SW
6G-4195
BACK UP
U
201-BK
201-BK
L6
L6
L6L6
L4
L4
S
S
S
S
K
K
511-BR
512-GN
S
2
2
L
L
L
L
L
L
614-PU
614-PU
200-BK-14
4
3
2
WH-18
1
K
K
K
200-BK
602-WH
200-BK-14
K
BK-18
RD-18
2
4
C-2013R-2853
3
LL
A
A
A
A
1
A-8
AA
J
J
512-GN
511-BR
509-WH509-WH
502-OR
500-BR500-BR
5
6
7
1
4
3
H
2
118-GY
501-GN501-GN
9T-6590
DETENT SOL
IMPL VALVE
B
A522-GN
A521-WH
E
200-BK-14
GG
GG
GG
GG
FF
FF
FF
A521-WH
1
2
B
201-BK
201-BK
201-BK
201-BK
201-BK
201-BK
L6
B
B
1
2
L24
SENDER
3E-7886
TACHOMETER
B445-GN
449-BU
450-YL
201-BK
2
200-BK-14
605-YL605-YL
200-BK-14
200-BK
200-BK
311-WH
200-BK-14
200-BK
200-BK-8
200-BK
200-BK-14
200-BK
200-BK-8
310-PU
1
141-YL
141-YL
5
1
A
2
3
A519-GN
A520-BU
141-YL
2
A520-BU
619-GN-14
610-OR-14
619-GN-14
619-GN-14
610-OR-14610-OR-14
AID
SOLENOID
9G-4365
START
207-BK
302-OR
A
6
8
4
3
7
5
508-PU
120-YL
200-BK
2
1
4
3
J
119-PK
A
119-PK
614-PU
1
1
2
4
8
3
10
9
1
6
5
7
4
3
2
1
447-PK447-PK
509-WH
2
L
G
7
L20
6
A519-GN
200-BK
200-BK
A520-BU
B
SUSPENSION
SOLENOID
AXLE
508-PU508-PU
4
509-WH
508-PU
511-BR
512-GN
10
200-BK
9X-3392
REAR WIPER
GN
GY
BR
OR
4
2
3
1
H
L
MOTOR
~T
BK
9
8
3
6
7
5
4
122-BU-14
2
2
1
E-83E-6946GG
F-6
5
4
3
2
1
124-GN-14
200-BK-14
ACTUATOR
149-8195
WATER
VALVE
BOARD
149-8217
CONTROL
3
2
1
J
2
A
112-PU-12
2
1
1
E
A514-YL
BUBU
L18
L18
L19
L21
RD
L21
L21
L19
L19
L19
L19
L6
L6
A525-GN-14
A524-BR-14
307-OR
OPERATOR STATION
Z
BK-00
306-GN
BR-14
BK-14
RD-14
2
8
3
2
1
SELECTOR
116-8653
TEMP
A523-PU-14
3
GG
FF
A523-PU-14
A520-BU
9
2
1
FF
4
1
7
2
L6
A514-YL
2
1
2
441-OR
125-OR-14
123-WH
123-WH 123-WH
123-WH 123-WH
123-WH
411-PK
201-BK
614-PU
614-PU
141-YL
AA
614-PU
B445-GN
3
614-PU
614-PU
200-BK
200-BK
200-BK
200-BK
8
200-BK
200-BK
200-BK
2
200-BK
200-BK
614-PU
614-PU
614-PU
614-PU
614-PU
5
10
9
6
A
3E-3763
SPEEDOMETER
200-BK-14
9X-3496
FUEL
IGN
SEND
GRD
METER
149-9959
TACH/HR
TEMP
3E-7240
CONVERTER
L23
IGN
SEND
GRD
GRD
SEND
IGN
7X-2058
NOTE B
LAMP
7X-2058
NOTE B
LAMP
IGN
SEND
GRD
GRD
SIG
+
WASHER PUMP
7T-8891
REAR
109-RD-6
E
7T-1390
SUSPENSION
AXLE RELAY
K
200-BK
3
2
3
2
A
125-OR
A
201-BK
200-BK-14
5
5
6
4
A
201-BK
36
619-GN-14
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
17
200-BK200-BK
503-BR503-BR
504-YL504-YL
122-BU
12
11
10
9
8
7
1
6
5
4
3
2
1
4
L31
L33
141-YL141-YL
A522-GNA522-GN
BKBK
3
125-9352
3
3
119-PK
200-BK 200-BK
505-BU505-BU
2
119-PK119-PK
1
LAMP
7X-2058
NOTE B
EMS ACTION
200-BK
104-YL
601-GY
A
323-WH
1
3E-7154
HEAT SW ONLY
7V-8390 SPRING
6D-4162 BUSHING
6D-4161 CONTACT
NOTE B: 8T-9722 SHELL
763-BU
F-11
7X-2058
NOTE B
LAMP
7X-2058
NOTE B
LAMP
7X-2058
NOTE B
LAMP
A
002T-3442W
124-GN-14
505-BU
503-BR503-BR
119-PK119-PK
G
D
RD-18
D
200-BK
109-RD-6
105-RD
1
5
BK-18BK-18
WH-18WH-18
316-PK
614-PU
537-GN
2
5
6
4
447-PK
2
5
6
4
3
PRESSURE
1W-3306
AIR
605-YL
1
606-GY
3
2
L34
2
6
-++
444-BU
1
450-YL
P
L32
200-BK
4
33
66
2
1
5
2
7
GROUND
SCRAPER CHASSIS
3
200-BK
449-BU
200-BK
200-BK
601-GY
601-GY
601-GY
601-GY
124-GN-14
200-BK
B445-GN
BK
A
119-PK
504-YL
TEMP
4W-0483
COOLANT
5
6
4
3
200-BK
200-BK
614-PU
505-BU
517-BU-14
601-GY
A514-YL
A519-GN
A514-YL
601-GY
ST
ON
OFF
B
S
C
R
109-RD-6
601-GY
60
1-G
Y
20
0-B
K
40
39
38
37
521-YL-14
601-GY
119-PK
A525-GN-14
A514-YL
A519-GN
141-PK
A524-BR-14
521-YL-14
A/C SW
3E-7155
201-BK
123-WH
441-OR
3E-7156
FAN SPEED SW
517-BU-14
200-BK
601-GY
3E-7152
FLOOD LAMP SW
601-GY
124-GN-14
3E-7150
HEADLAMP SW
124-GN-14
517-BU-14
584-YL
500-BR
6
4
3
1
1
141-PK
506-PU
A525-GN-14
A524-BR-14
A523-PU-14
502-OR
200-BK
3E-7157
FRONT WIPER SW
5
2
DIMMER SW
3E-7151
PANEL
DIMMER
RESISTOR
3T-3123
PANEL
600-BR
614-PU
200-BK
A
3E-7160
START AID SW
517-BU-14
517-BU-14
608-GN
608-GN
3E-7171
FUEL PUMP SW
200-BK
116-BR
3E-7164
EMS TEST SW
200-BK
614-PU
614-PU
503-BR
A519-GN
584-YL
504-YL
601-GY
3E-7169
REAR WIPER SW
118-GY
507-WH
WASHER SW
3E-7158
FRONT/REAR
200-BK
118-GY
200-BK
RD-18
BK-18
G
T
S
BK-18
WH-18
RD-18
1
1
2
614-PU
TAIL
STOP
LAMP
8C-6207
STOP-TAIL
TURN LAMP
7X-6066
RIGHTRIGHT
604-OR604-OR
3
2
L1
200-BK
200-BK
200-BK-14
611-PU
614-PU
619-GN
5
V
R
R
619-GN-14
R
R
R
R
A
444-BU
450-YL
449-BU
447-PK
200-BK
506-PU
507-WH
7
9
8
1
4
3
10
2
6
5
614-PU
411-PK
200-BK
614-PU
502-OR
118-GY
9G-7641
KEY SW
200-BK
500-BR
501-GN
521-YL-14
605-YL
3
606-GY
4
3
2
1
2
1
A-11
1 4 3 2 1 15 1 1 1 1 0 9 8 7
6
5 4
3 2
1
15 14 13 12 11 10 9 8 7
6
5 4
3 2
1
F
E
D
C
B
A
F
E
D
C
B
A
124-GN-14
517-BU-14
516-GN-14
515-GY-14
608-GN
116-BR
619-GN-14
506-PU
109-RD-6
326-PU
308-YL
B
B
200-BK
A
112-PU-12
L22
307-OR
13
B
1
15
16
P
A
119-PK
504-YL
C
C
A519-GN
503-BR
614-PU
200-BK
505-BU
201-BK
507-WH
A
L26
201-BK
4
L26
201-BK
L26
201-BK
A
A
B
B
614-PU
A524-BR-14
A525-GN-14
614-PU
LAMP
8C-9678
DOME
201-BK
B
201-BK
610-OR-14610-OR-14
311-WH
604-OR
614-PU614-PU
103-RD
102-RD
200-BK-14
B
A
306-GN
200-BK-14
109-RD-6
109-RD-6
7
200-BK-14
200-BK-14
200-BK-14200-BK-14
A526-PK-14
200-BK-14
611-PU
200-BK-14
601-GY
200-BK
200-BK
601-GY
118-GY
601-GY
601-GY
118-GY
2
00
1
00
A
L24
A
A
201-BK
2T-3302
B
2T-3303
BK
8I-1573
CHG
A-6
BRBR
R
L11
HH
GN
GN
JJ
2T-3310
05
06
141-YL
JJ
2T-3306
AND TRANSMISSION SHIFTER IN NEUTRAL
A
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF
DESIGNATION
CIRCUIT GROUPING
#L
COMPONENT
ATCH WIRE, CABLE,
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLUE
GREEN
BU
GN
WH
OR
YL
PK
BK
OR SCREW TERMINAL
BLADE, SPADE, RING,
CONNECTION TO SURFACE
OF COMPONENT
INTERNAL ELECTRICAL
ELECTRICAL CONNECTION
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
PINK
YELLOW
ORANGE
WHITE
BR
PU
GY
A-11
A
A-12
A-12
A-10
W
F-11
MM
2G-2159
AIR DRYER
B-12
F-11
ATCH
112-PU
LO HEAD LAMP
D-9
C-3
E-14
E-13
00
C-11
B-5
E-7
E-7
01
105-RD
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
T
02
01
02
01
01
8I-1540U
2T-3348 02
042T-3308
2T-3307
105-RD
OPERATOR STATION
C-10
DD
CC
BB
AA
CABLE AS.
102-RD-14
WIRE AS.
R
03
N
M
L
K
J
H
G
01
E
D
C
C-10B
NOTE A: NORMALLY OPEN BEFORE REFRIGERANT CHARGE
LOCPART NO.IDENT
HARNESS AS.
A
3
2
WH-18
1
BK-18
RD-18
601-GY
S
614-PU
611-PU
507-WH
TURN
PARK
200-BK
507-WH
MOTOR
MOTOR
122-BU-14
00
LO HEAD LAMP
2T-3821
HI HEAD LAMP
129-5688
LEFT TURN
PARK LAMP
619-GN
T
606-GY
605-YL
611-PU
PARK LAMP
129-5688
RIGHT TURN
TURN
PARK
619-GN
B
200-BK
200-BK
OPERATOR STATION
2
323-WH
447-PK
611-PU
201-BK
2
203-BK-14
B443-BR
A
B
02
HI HEAD LAMP
104-YL
A
112-PU-14
2
323-WH
125-OR
323-WH
125-OR
6
5
10
1
120-YL
ABS SOLENOID
125-OR
2
123-WH
501-GN
200-BK
HOLDER
2S-3747
FUSE
112-PU-10112-PU-10
1
BK-18
307-OR
307-OR
2
6T-5925
START SW
NEUTRAL/
6T-5925
NEUTRAL SW
409-OR 409-OR
201-BK201-BK
307-OR 307-OR
316-PK316-PK
3
21
N/O
N/C
A-12A-12
3
21
N/O
N/C
10A
3K-8782
FUSE
118-GY
116-BR
141-YL
CONNECTOR
DIAGNOSTIC
101-RD-12
BREAKER
9S-0174
ALTERNATOR
RELAY
3T-0376
MAIN
304-WH-8
L12
L7
L9
L18
L11
L11
L11
L3
103-RD
OPERATOR STATION OPERATOR STATION
304-WH
308-YL
2
203-BK
311-WH
310-PU
308-YL
103-RD
A
N/C
N/O
103-RD
321-BR
103-RD
321-BR
BK-18
109-RD-6
200-BK-8
101-RD-6
103-RD
102-RD-14
102-RD
103-RD
203-BK
A
306-GN
112-PU
308-YL
304-WH
102-RD-14
102-RD-14
101-RD
311-WH
310-PU
207-BK
302-OR
20
19
18
17
16
15
14
13
9
4
8
12
6
5
3
1
11
10
7
2
10
60A
3E-7279
RELAY
START
103-RD
103-RD
105-RD
9G-9487
KEY BREAKER
L18
101-RD-8
101-RD-6
105-RD
308-YL
RELAY
3E-7279
PUMP
FUEL
LAMP BREAKER
9G-9487
DOME, STOP& TURN
PARK LAMP BREAKER
3T-2662
HEAD, PANEL, TAIL&
33
L18
20
15
10
BREAKER
3T-8728
BLOWER MOTOR
124-GN-14
7X-2058
NOTE B
LAMP
L20
112-PU-14
101-RD
101-RD-12
601-GY
619-GN
RD
G
TURN LAMP
7X-6066
LEFT
LAMP
8C-6207
STOP-TAIL
R
604-OR604-OR
WASHER PUMP
7T-8891
FRONT
606-GY
321-BR
200-BK-14
614-PU
605-YL605-YL
201-BK
B443-BR
BB
3
304-WH-8
200-BK-14
419-YL
408-WH
L30
125-OR
L30
515-GY-14
516-GN-14
311-WH
R
R
R
BK-18BK-18
200-BK200-BK
121-RD
112-PU-14
310-PU
311-WH
200-BK
517-BU-14
415-GN
L20
306-GN
BLOCK
9G-0747
FUSE
101-RD
200-BK
201-BK
AIR DRYER
CONVERTER
10A
10A
114-RD
10A
200-BK
10A
6
FRONT WIPER
FLOOD LAMP
HORN
IMPL VALVE SOL
BACKUP ALARM
10A
10A
10A
10A
10A
10A
101-RD-14
101-RD-12101-RD-12
306-GN
310-PU
L22
200-BK
A
109-RD-6
109-RD-6
L23
L31
L31
A
BK-18BK-18
L31
L30
584-YL
517-BU-14
3E-6945
505-BU
RD
119-PK
601-GY
L33
L23
614-PU614-PU
604-OR604-OR
G
T
S
200-BK
200-BK
447-PK
NN
120-YL
H
1
MOTOR
200-BK
P
124-GN-14
516-GN-14
COOLANT
FLOW SW
9X-3040
3
2
4
1
3
6
323-WH
323-WH
PUMP
FUEL
323-WH323-WH
RD-18
9G-4247 ATCH
3T-5760 STD
12V BATTERY
9G-4247 ATCH
3T-5760 STD
12V BATTERY
7N-0718
DISCONNECT SW
STEERING SW
L7
L3
605-YL
Z
ALARM
BACKUP
OPERATOR STATION
PLUG B TO RECEPTACLE B
W/O STEERING SW CONNECT
201-BK
S
608-GN
201-BK
BK-00
BK-00
RD-00
417-GY417-GY
B
BNN
NN
NN
CC
BB
RD-00
BK-00
BK
BK
1
2
2
1
201-BK
7N-9560
CONVERTER SW
SENDER
CONVERTER
444-BU
407-PK
201-BK
2
1
201-BK201-BK
S
601-GY
203-BK-14
C
T E
E
E
A
A
4
2
608-GN
321-BR
B443-BR
608-GN
614-PU
Y
606-GY
605-YL
604-OR
200-BK-14
1
5
200-BK
A520-BU
A521-WH
L22
HH
03
01
01
00
2T-3739
FLOOD
LAMP
9X-1439
BOWL
G
N
447-PK
200-BK-14
604-OR
614-PU
605-YL
606-GY
608-GN
8
7
5
3
6
4
2
1
9
10
L34
H
601-GY
606-GY
321-BR
308-YL
310-PU
606-GY
321-BR
1
2
1
2
U
Y
619-GN-14
SS
5T-1561X
02
101-RD-6
03
101-RD-12
L23
601-GY
6
522-WH-14
141-YL
2T-3738
105-RD
2T-3739
B-12
E-13E-13
1
OPERATOR STATION
200-BK
7
8
200-BK
321-BR
A
EDGE
FLOOD
LAMP
9X-1439
CUTTING
T
T
NEGPOS
NEGPOS
413-BR
T
BK-18
L13
125-OR
323-WH
203-BK
L32
L32L32
L32
L35
5
4
614-PU
604-OR
3
2
1
513-OR-14
B
323-WH
200-BK
513-OR-14
522-WH-14
L35
200-BK
323-WH
504-YL
H
PK-18PK-18
2
GN
GY
BR
OR
4
2
3
1
H
L
1
2
B443-BR
311-WH
310-PU
MOTOR
A-12006T-1992JJ
2T-3245
2T-3777
2T-3738
2T-2854
4V-9764
4D-6565
611-PU-14
A523-PU-14
515-GY-14
8
1
200-BK
BK-18BK-18
L35
1
6
2
3
200-BK
409-OR
201-BK
200-BK
9X-3392
WIPER
FRONT
2T-3205
9G-9813
L9
L5
L5
L5
L7
L7
L7
601-GY
L35
200-BK
L15
L22
605-YL
606-GY
602-WH
201-BK
419-YL
408-WH
L8
125-OR
L8
C
102-RD-14
307-OR
326-PU
L8
103-RD
L25
SW
3T-3133
DOME LAMP
200-BK
L25
121-RD
121-RD
L35
2T-3360
HORN SW
FORWARD
124-GN-14
322-GY
112-PU
1
M
A
A
410-WH
BK
RD
2
1
9X-7801
A
123-WH
419-YL
408-WH
201-BK
201-BK
201-BK
413-BR
405-GY
407-PK
406-PU
B443-BR
417-GY
410-WH
411-PK
415-GN
608-GN
605-YL
606-GY
103-RD
103-RD
605-YL
606-GY
103-RD
SIGNAL SW
2T-3413
TURN
118-GY
200-BK-14
A
7
201-BK
500-BR
501-GN
502-OR
1
AIR PR
TC OIL TEMP
COOL TEMP
BK OIL PR
NEUTRAL
+ BATTERY
GROUND
ALTERNATOR
ENG OIL PR
LAMP
FUEL PR
TEST
PRIM. STER
PARK BK
11
4
19
18
17
3
15
16
13
12
10
9
8
7
6
5
20
14
2
1
U
102-RD-14
102-RD
H
L10
1
200-BK-14
200-BK
123-WH
311-WH
200-BK
614-PU
506-PU
200-BK
TEMP SW
134-6547
START AID
8T-8692
109-RD-6
116-BR
619-GN-14
102-RD-14
102-RD-14
C
200-BK
200-BK
200-BK200-BK
415-GN
125-OR
323-WH
L1
200-BK200-BK
200-BK
601-GY
323-WH
L31
506-PU
FUEL PUMP
50
2-O
R
118-GY
50
1-G
N
50
0-B
R
T
203-BK203-BK
200-BK-14
B
1
101-RD
3
2
1
BK
YL
102-RD-14
RELAY
3E-5239
HEAD LAMP
200-BK-14200-BK-14
L13
L30
C
NOTE
00
00
2
X
X
1
200-BK-8
207-BK
X
200-BK-14
HH
A522-GNA522-GN
141-YL141-YL
614-PU
614-PU
5
9
601-GY
601-GY
M
M
M
200-BK
515-GY-14
C
L31
601-GY
601-GY
516-GN-14
601-GY
601-GY
601-GY601-GY
308-YL
619-GN
3
605-YL
606-GY
2
515-GY-14
601-GY
200-BK-14
308-YL
L33
507-WH
A
601-GY
B445-GN
A523-PU-14
608-GN
116-BR
201-BK201-BK
201-BK
201-BK
201-BK
L10
A514-YL
L16
606-GY
403-GN
L31
141-PK
11
200-BK
201-BK
415-GN
601-GY
FF
1
3
200-BK
+ BAT
TERY
322-GY 322-GY
4
~
GG
2
515-GY-14
A530-OR-14
A529-WH-14
4
522-WH-14
3E-5464
THERMOSTAT SW
9G-1950
RESISTOR
A528-YL-14
516-GN-14
516-GN-14
T
200-BK-14
515-GY-14
517-BU-14
200-BK-14
WH/RD-14
BK-14
124-GN-14
A527-BU-14
9X-9363
BLOWER
517-BU-14
MOTOR
T
323-WH-14
200-BK
123-WH 123-WH
323-WH-14
125-OR-14
6V-5537
STARTER
ENGINE OIL SW
PRESS SW
107-0613
ENGINE OIL
DETENT SW
107-0613
EJECTOR
1
125-OR-14
521-YL-14
522-WH-14
B
RECEPTACLE
AUX START
450-YL
L9
L5
L10
MM
ENGINE
TO
BK-6
6T-2217
RESISTOR
1
2
302-OR
304-WH-8
200-BK
405-GY
201-BK
AA
301-BU
3N-0539
101-RD-6
RD-00RD-00
BK-00
FRAME
TO
BK-6
BK-00
406-PU
00
2T-2765
2H-1855
DIMMER SW
HEAD LAMP
610-OR-14
7T-9074
SOLENOID
FWD HORN
200-BK
200-BK-14
408-WH
419-YL
611-PU-14
100-5047 STD
ALT
CONDITIONER
CLUTCH
SOLENOID
3E-1906
AIR
513-OR-14
403-GN
3E-7259
A
DETENT
PRESS SW
7X-1598
EJECTOR
BK-18
BK-18
311-WH
403-GN
413-BR
405-GY
407-PK
406-PU
201-BK
449-BU
441-OR
444-BU
200-BK-8
101-RD-6
304-WH-8
207-BK
302-OR
417-GY
25
9
3
4
5
23
6
2
12
13
7
201-BK
17
14
21
22
19
24
20
1
8
18
10
11
122-BU-14
OPERATOR STATION
U
R
YELLOW
GREEN
RED
2
4
517-BU-14
D
D
203-BK-14
200-BK
1
2
B
200-BK-14
L14
3
WH
307-OR
122-BU-14
16
521-YL-14
15
323-WH-14
77
6
101-RD-8
B443-BR
GND
CHASSIS
DD
Z
G S
MTR BAT
MOTOR
522-WH-14
3E-7886
SPEED SENDER
TRANS OUTPUT
201-BK
~TT
BK
L32
B
200-BK
200-BK
A520-BU
2T-3778
2T-33502T-3350
T
5T-9895
2T-3204
02
TORQUE CONV
SENDER
FUEL LEVEL
200-BK-14
A521-WH
BK
RD
114-GN
1
A
1
2
STOP LAMP SW
604-OR
BRAKE SW
PARKING
AIR SW
NOTE A
REFRIGERANT SW
7N-9785
COOLANT SW
SENDER
6N-5926
COOLANT
B
ALT
+
R
U
1
BLUE
3E-7527
FLASHER
A541-PU
A
200-BK-14
310-PU
322-GY
517-BU-14
NN
441-OR
14
18
310-PU
308-YL
A519-GN
AA
LAMP
7X-2058
NOTE B
PANEL
2
19
307-OR
PK
Y 2T-1250 00 E-13
BU
RD
BKBK
VV
3
2
1
V
1
2
3
9W-1581
EL NEU START
F-12
9X-9482
ASBS SOLENOID
RD
BKBK
N/C
N/O
1 2
3
8I-2029
C-148I-1983
V
8I-1984
00
C-13
V
7N-9719
SOLENOID
TORQUE CONVERTER
V
V
6T-5925
TORQUE CONV SW
763-BU
H
H
200-BK
104-YL
763-BU
10A
R
REAR WIPER
119-PK
L37
N/C
N/O
1
2
3
KK
KK
105-RD
109-RD
KK 8I-1985 00 F-12
200-BK
GROUND
COMPARTMENT
FUEL SW
107-0616
B
2
1
114-5334
107-0613
104-YL
117-YL
RD
BK
U
2
1
2
1
1151499
TERMINAL BLOCK
8N-1693
-14
488-WH
488-WH
A292-BK
117-YL
488-WH
CONN 1
CONN 5
CONN 4
CONN 3
CONN 8
CONN 9
CONN 2
CONN 6
CONN 7
CONN 11
CONN 12
CONN 13
CONN 14
CONN 15
CONN 16
CONN 17
CONN 18
CONN 20
CONN 24
CONN 22
CONN 23
CONN 19
CONN 21
CONN 10
G
488-WH
123-6449
A292-BK
A292-BK
A292-BK
2T-2217
488-WH
2
1
9
10
11
12
A292-BK
A292-BK
A292-BK
200-BK
A292-BK 201-BK
200-BK
200-BK
200-BK
200-BK
201-BK
115-8505
200-BK
200-BK
A292-BK
9X-3210
201-BK
AIR PRESSURE SW
A292-BK
160-2445160-2445
LOAD
PILOT
GAUGE AND EMS
GAUGE
UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 16 GAUGE
TO MACHINE STRUCTURE
ACTION ALARM
ACTION ALARM
ELECTRONIC MONITORING
SYSTEM (EMS)
THIS SCHEMATIC IS FOR THE 611 OPENBOWL
(168-8425)
BK-18
BK-18
CONN 25
CONN 28
CONN 29
CONN 27
CONN 26
CONN 30
E85218
ALL DASHED LINES ARE ATTACHMENTS.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
AUTOMATIC ELECTRONIC TRACTIONAID (TCS).
CATERPILLAR MONITORING SYSTEM.
PANEL LAMP CIRCUIT.
AUTOMATIC RETARDER CONTROL.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE ECM.
TURN SIGNAL CIRCUIT.
PAYLOAD MONITOR CIRCUIT.
START AID CIRCUIT.
TRANSMISSION CONTROL CIRCUIT.